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# In Hooke's Law, is the elastic constant (k) meant to stay the same number no matter what the force is?

Im doing a physics assignment where you have to find the elastic constant of a certain rubber material we were given. Then we are meant to change the width and see the difference in the elastic constant compared to the different widths.

But when i tried using different forces on one width i got a massive range of answers for elastic constant. Is that meant to happen. Here is the equation to remind you guys.

k = F/x

k = elastic constant

F = Force

x = Amount of stretch

### 2 Answers

- Anonymous1 decade agoFavorite Answer
k will stay the same until it passes a certain point which destroys the elasticity of an object and it will not return to normal k the new k will be weaker

also the larger your width it will have a MUCH greater k value

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- jgouldenLv 71 decade ago
In Hooke's Law, k is the spring constant; it doesn't change. This isn't a particularly accurate model for many elastic materials. If you're using, say, rubber bands, try to keep the stretch distance from getting too large.

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